Serological testing is a type of medical test that checks for antibodies in a person's blood. These tests help determine if someone has been infected with a certain disease in the past or if they have immunity to it. Full definition
That's what Cohen, et al. found in Retrospective review of serological testing of potential human milk donors. (skepticalob.com)
But since then, the use of serological testing for TB has increased, prompting WHO to do an updated review of the evidence. (sciencemag.org)
Beyond this, the scientists also recommend combining of mo - lecular with serological tests which determine infection by detecting the antibodies developed by an infected person a few days after the infection. (sciencedaily.com)